Preliminary fuel heating and feeding system.



J. REIGHENBACH.

PRELIMINARY FUEL HEATING AND FBBDINGSYSTBM.

APPLICATION I'LED SEPT. 20, 1912.

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JOSEPH REICHENBACH, OF NEW WESTMNSTR, BRITISH COLUMIA, CNADA.v

PRELIMINARY FUEL HEATING AND FEIDINGSYSTEM.

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Specification of Letters" Patent.

Application i'led September 2G, 1912. Serial No. l.

Trbatented Jan. 27 IHM e.

To all whom t moy/ concern Be it known'that l', JOSEPH Rutei-mnnaoii9 a citizen of the Dominion of Canada7 residing at New Westminster; in the trovince of British Columbia, Canada` have invented a new and useful Preliminary Fuel Heating and Feeding System, of which the following is a specification.

Thisl invention relates to a means for heating a. liquid fuel to approximately' its flash point'beore. admitting` it to the burner ot 'a boiler and is designed as supplementary to the liquid `fuel service of the boiler to enable the liquid fuel to be used for raisingthe steam in the boiler.

In the customary practice, where heavier oils are used as fuel, the oil delivered under pressure. to the burner of the boiler by a pump which is operated by steam derived from the boiler. Ou starting up such a boiler the oil service cannot be used until steam is 'generated to the required pressure to operate the pump and a lire is usually built in the lire box to enable this to be done.- This practice is obviously inconvenient and occupies considerable time, and the invention, which is the subject oi this application, has been devised to enable the oil as delivered to the boiler to be heated to approximately its flfish point before delivery to the burner. .This supplementary oil heating system is used until a sufficient steam pressure is obtained in the boiler yto operate the normal oil service pump and is then cut out of action.

.The invention is particularly described in the *following specification,reference being mad@J to the drawings bywhich it is accomn panied, in which:

Figure' 1 shows in general arrangement the application'of the device to e single burner in the fire-box of a boiler, and l i g. 2. a vertical section to an enlarged scale ot' the primary heating coil.

In these drawings 2 represents the boiler and 3, 3, 3 the pipe by which the fuel oil is delivered ,under 'normal service to the burner at4, which normal service, is under pressure derived from a steam operated pump (notshoivn)` of any approved kind. This normal service of oil under pressure is therefore dependent on the-presence of a head of steam in the boiler and is not available on-irstlstarting up the boiler. The device, which is the subject of this applicattion, supplements this normal oil service and is used only until. the required steam pressure is attained. It consists of an oil heating coil S through which oil is circulated by a hand operated pump 6, the -oil being` de rived by a pipe 5 from the oil service pipe 3, 3f' which delivers via its branch 3h to the burner il et the boiler,` avalve 13 being in this connection of to 3a, a Valve l2 on the delivery` branch 3 to the burner of the boiler and a valve llhct-ween the sections 3 and 3 ol: the service pipe outside of the connection at l-froni the. heating coil 8.

y The coil S is inclosed Within a heat nonroiuluc# ing;` casing 9 having a perforated top 18 from the couler of' whichdepcnds'a baille Y `ries ot bulb-like enlargeound i hich a spiral groove 2.0 is former designed to assist in circuloting the hat gases around the coil. The lower end oi" l) 'terminates in a. point in the center oil a .lunsen burner l5 at the base of the coil S. This burner l5 is served with a fuel in any cimvenient manner. ln the drawing' it shown as deriving a distillate from afres'crvoir lo into which` air is compressed by a small hand pump 17, the air volatilizing a lig/'hlr hydrocarbon distillate, such benzin.

ln use. when this preheating device is required to be used to raise steam in the boiler. the valve is closed to shut the oil service 'from the burnerfl of the boiler until the oil is'hot enough, and the valve 1.3 is opened ailmittingr it to the coil. Air is compressed in the reservoir lo with a feu"strokesl of the hand piunp l? and the burner l5 is ignited. The oil in the pipe circuit 5, (5, 3 and l0 is circulated by means oit the hand operated pump and passingY through the coil S is heated therein. When the temperature of the oil iu this circuit is raised :ippr;\,im to its tiash point. the valve lil op admit it to the burner Jiat which it may -oc ignited to generate steam in the boiler.

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lilhen sullicieut steam pressure is generated -ln the boiler to operate the normal oil service pump (not shown) the gras is shut ott from the burner l5, thcvalve lf3 closed and the pre-heating cd'il 8 is thrown out of use; the delivery of the oil to the burner being conducted in the normal manner through the pipe 3 3, 3b, by thc action. of the steam operated oil pump ,(not shown) that is actuated by the steam derived from the boiler, A .simple provision is thus made whereby steam may be initially generated in lsaid pipe line, a pump `pipe line, a pump a boiler pending the attainment of sufficient pressure to o rate the service pump and effect the heating of the oil, and the device is one that can be conveniently7 introduced in an existiner service Without changing any of itsparts, the provision being distinctly supplemental to 1t.

What I claim is y l. r1 `he combination With a steam gener ator, a main fuel burner cooperative therewith, and a main 'oil supplying pipe line to said burner; of a supplementary primary heating apparatus comprising an oil heating coil having its ends in communication with for effect-ing circulal tion ooil through said coil, and means for heating said coil.

2. The combination with a steam gener atorr'a main fuel burner in position to heat the generator, and a main pipe line that conveys the oil to said burner, of an oil heating coil having one end connected to said pipe line at oneplace, and the other end connect ed with said pipe line atanother place, a shut-oit' valve in .the heating coil pipe line circuit, a shut-oit valve in the main burner in the heating coil pipe line for setting up a circulation of oil through said coil and the portion of said main burner pipe line between the places ot connection ot the same with the coil pipe line, and a means for applying heat to said coil.

3. Thecombination with steam gener'- ator, a main oil burner in p sition to heat the generator, and a main pipe line that conveys oil to the burner, of an auxiliary pipe line connected to said *main burner pipe line l and including a heating coil, said main burner pipe line andsaid auxiliary pipe line having a portion in common, a control valve in said main pipe line adjacent to the main burner, a second control valve in said main pipe line for shutting oit the flow of oil to both the main and auxiliaryl pipe lines, a third control valve in said auxiliary pipe line, a means connected in said auxiliary pipe line for etlfecting oil circulation throng 1 said coil when said last named valve is open, and means for applying heat. to said coil.

4. ln combination with a steam generator, a main oil burner in position to heat the generator` andfa main pipe line that conveys the oil to the burner, an auxiliary pipe line connected to said main burner pipe line and including a' heatiiig coil, said main burner pipel line;y and said auxiliary a portion in con'nnon, a control valve in said main pipe line adjacent to the main burner, a second control valve in said main )ipe line tor shutting otl the tion ot oil to )oth the main and auxiliary pipe lines, a third conf trolvalve in said auxiliary pipe line, a means connected in said auxiliary pipe line for etl'ecting oil circulation through said coil when said last named valve is open, and

means for applying heat to said coil, said last named means including a liquid fuel hurner and means for supplyingfuel thereto.

ln testimony whereof I have name to this.specitication in the. presence of I two subscribing Witnesses.

signed my v pipe line having 

